Open source project to develop geopolymer cast stone construction

Blue Crete Cement

Blue Crete uses a geo-polymer binding agent as a low carbon-footprint alternative to Portland cement (OPC). No heat is required in Blue Crete’s manufacturing process. Unlike Portland cement, it is not dependent on fossil fuels or large kilns for its production. It’s made from a blend of bio-based materials and post industrial waste.

Despite those differences, Blue Crete looks like, acts like, and works like Portland cement, and the product itself results in a high performance concrete with compressive strength of 10,000 psi. It is water retardant, acid retardant, discourages the oxidation of rebar, and has a near zero coefficient of expansion – which makes it excellent in below freezing temperatures as well as tropical regions of the world. It does not transfer heat very well, and offers significant insulating properties.

Blue Crete is compatible with a wide variety of aggregates, including some unconventional choices such as crushed glass and rubber. It’s currently being real-world tested in a variety of projects internationally for use in irrigation pipelines, roads, and commercial buildings. Its low-water requirement makes it particularly attractive in several arid regions of the globe.

According to Art Galietti, the company’s Chief Operating Officer, Blue Crete will cost about 10%-15% less than Portland Cement to the end user. Galietti indicated that the company is planning to offer exclusive licenses to the raw material to manufacturers worldwide.